Hi All,
I understand that with market sizing questions you're supposed to lay out your structure in a tree first and then do the calculations afterwards. You're supposed to start from the top of the tree (e.g. total market size for balloons in the US) and eventually work down to something like population.
All the tutorials I've seen online are people starting from population, segmenting, and then working their way upwards towards the final answer.
Which is the best way to break down a problem?